Home / 12,355.36-18,494.64-8,891.68

Finding the Fourth Proportional to 12,355.36, 18,494.64 and 8,891.68

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Solution

The fourth proportional to 12,355.36, 18,494.64 and 8,891.68 is: 13,309.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,355.36 : 18,494.64 = 8,891.68 : x
  2. Step 2: Convert to fraction form
    12,355.36/18,494.64 = 8,891.68/x
  3. Step 3: Cross multiply
    12,355.36x = 18,494.64 × 8,891.68
  4. Step 4: Simplify right side
    12,355.36x = 164,448,420.60
  5. Step 5: Solve for x
    x = 164,448,420.60/12,355.36
  6. Step 6: Final answer
    x = 13,309.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.